Bong-Hoon
Bong-Hoon Chung, Gwangyang KR
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20120267012 | ZINC-PLATED STEEL SHEET FOR HOT PRESSING HAVING OUTSTANDING SURFACE CHARACTERISTICS, HOT-PRESSED MOULDED PARTS OBTAINED USING THE SAME, AND A PRODUCTION METHOD FOR THE SAME - Provided is a zinc-plated steel sheet for hot pressing having outstanding surface characteristics, comprising: a steel foundation plate comprising a metal surface diffusion layer of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr; an aluminum-rich layer containing at least 30 wt. % of aluminium formed on the surface diffusion layer, and a zinc plating layer formed on the aluminum-rich layer. In this way, a metal having a low affinity for oxygen is coated to an effective thickness prior to annealing and thus the creation of annealing oxides at the surface of the steel sheet is suppressed and a uniform zinc plating layer is formed, and alloying of the zinc plating layer is promoted during press-processing heat treatment. Cracking in the steel foundation plate during hot press molding is prevented. | 10-25-2012 |
Bong-Hoon Kim, Daejeon KR
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20090075002 | Block copolymer nanostructure formed on surface pattern with shape different from nanostructure of the block copolymer and method for preparation thereof - Disclosed are block copolymer nanostructures formed on surface patterns different from nanostructure of the block copolymer and preparation methods thereof. | 03-19-2009 |
20100151393 | METHOD OF MANUFACTURING NANO-STRUCTURE AND METHOD OF MANUFACTURING A PATTERN USING THE METHOD - According to an example embodiment of the present invention, a photoresist pattern is formed on a base substrate including a neutral layer. A sacrifice structure including a first sacrifice block and a second sacrifice block is formed on the base substrate having the photoresist pattern, and the sacrifice structure is formed from a first thin film including a first block copolymer. Thus, a chemical pattern is formed to form a nano-structure. Therefore, the nano-structure may be easily formed on a substrate having a large size by using a block copolymer, and productivity and manufacturing reliability may be improved. | 06-17-2010 |
Bong-Hoon Kim, Seoul KR
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20090004375 | METHOD OF NANO-PATTERNING BLOCK COPOLYMERS AND METHOD OF MANUFACTURING POLARIZER AND COLOR FILTER USING THE SAME - Provided is a method of nano-patterning block copolymers and a method of manufacturing a polarizer using the same. The method of nano-patterning block copolymers includes coating block copolymers on a lower substrate to a predetermined thickness, forming a thickness gradient by patterning the block copolymers to have a predetermined aspect ratio, and aligning self-assembled block copolymers in a direction of the thickness gradient by heat-treating the block copolymers having the thickness gradient. | 01-01-2009 |
Bong-Hoon Kim, Incheon KR
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20120249266 | RF FILTER FOR ADJUSTING COUPLING AMOUNT OR TRANSMISSION ZERO - An RF filter, e.g. RF cavity filter for adjusting coupling amount or transmission zero is disclosed. The RF filter includes a housing member in which cavities are defined by walls, resonators located in the cavities, a cover combined with an upper surface of the housing member, a first tuning element inserted into a first cavity of the cavities through the cover, and a second tuning element inserted into a second cavity of the cavities through the cover. Here, the first tuning element and the second tuning element are connected electrically. | 10-04-2012 |